package com.zzl.alligator.common.util;

import lombok.extern.slf4j.Slf4j;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Date;

/**
 * TODO
 *
 * @author zhouziliang
 * @since 2020/6/24 11:34 上午
 */
@Slf4j
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};


    private static DateTimeFormatter[] parsePatternFormats = {
            DateTimeFormatter.ofPattern("yyyy-MM-dd"), DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"),
            DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"), DateTimeFormatter.ofPattern("yyyy-MM"),
            DateTimeFormatter.ofPattern("yyyy/MM/dd"), DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss"),
            DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm"), DateTimeFormatter.ofPattern("yyyy/MM"),
            DateTimeFormatter.ofPattern("yyyy.MM.dd"), DateTimeFormatter.ofPattern("yyyy.MM.dd HH:mm:ss"),
            DateTimeFormatter.ofPattern("yyyy.MM.dd HH:mm"), DateTimeFormatter.ofPattern("yyyy.MM")};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static LocalDateTime getNowDate() {
        return LocalDateTime.now();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    /**
     * 日期转字符串
     *
     * @param date
     * @return
     */
    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    /**
     * 日期转字符串
     *
     * @param date
     * @return
     */
    public static final String dateTime(final LocalDateTime date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    /**
     * @param format
     * @param date
     * @return
     */
    public static final String parseDateToStr(final String format, final LocalDateTime date) {
        return date.format(DateTimeFormatter.ofPattern(format));
    }

    /**
     * Date转String
     *
     * @param format
     * @param date
     * @return
     */
    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }


    /**
     * @param format
     * @param ts
     * @return
     */
    public static final Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @param format
     * @param ts
     * @return
     */
    public static final LocalDateTime localDateTime(final String format, final String ts) {
        return LocalDateTime.parse(ts, DateTimeFormatter.ofPattern(format));
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath() {
        return dateTimeNow("yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime() {
        Date now = new Date();
        return dateTimeNow("yyyyMMdd");
    }


    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }


    /**
     * 日期型字符串转化为日期 格式
     */
    public static LocalDateTime parseLocalDateTime(Object str) {
        if (str == null) {
            return null;
        }
        return parseDate(str.toString(), parsePatternFormats);
    }

    /**
     * 格式化
     * @param dateStr
     * @param parsePatterns
     * @return
     */
    private static LocalDateTime parseDate(String dateStr, DateTimeFormatter[] parsePatterns) {
        LocalDateTime dateTime = null;
        for (DateTimeFormatter formatter : parsePatterns) {
            try {
                dateTime = LocalDateTime.parse(dateStr, formatter);
            } catch (Exception e) {

            }
        }
        if (dateTime == null) {
            log.error("字符串{} 无法解析为日期格式", dateStr);
        }
        return dateTime;
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }
}
